Machine for winding yarn



March 11, 1947. J. P. MACKIE IACHI NE FOR WINDING YARN Filed fla 4. 1944 5 Shasta-Sheet 1 Inventor I i, I I

ltorneys Mmmz MACK-F; ,4112% Momma FOR WIRING mm Filed lay 4.1944 5 sum-sum 2 March 11; 1947. MACKlE 2,417,258

MACHINE FOR WINDING YARN Filed May 4. 1944 5 Sheets-Sheet 4 nbenlor 11, 1941. J. ACK]; 2,417,253

MACHINE FOR WINDING YARN Filed my 4'. 1944 5 sums-sum s Inventor v yarn guide.

Patented Mari 11, 1947 v FOR WINDING rams John Pringle Mackie, Belfast, Northern Ireland, l assignor to James Maokie and Sons Limited, Belfast, Northern Ireland, a British company ADPl cntionMay 4, 1944, Serial No. seam In Great Britain May 10, 1941 4 Claims. (Cl. 242-48) 1 This invention relates to winding devices for cross-winding rolls of yarn which maybe either cylindrical or tapering. The winding devices are of the type in which a helically grooved'roller is used for eflecting apart of the traverse or the yarn. According to this invention the' grooved roller has either one or two helical'grcoves in its surface without intersections, either for causing.

return traverse begins from each end 'oithe roller; the drag-diminishing as the curvature decreases, and then when the curvature reverses the yarn to be tra'versedln one direction only, or

for causing the yarn to be traversed in opposite directiom from an intermediate position, while a stationary yarn guide or delivering device for the yarn is used, and a shaped breastplate is disposed between the. yarn delivering device and the grooved roller, the position oi the yarn delivering devices and the breastplate, and the hape of this breastplate being such as to control the whole of the return travel of the yarn .from the leaving end of the groove back toward its starting end in the case of a roller with one groove, or back toward the starting end of an oppositely directed groove when the roller has two such grooves. The

grooves may terminate .near the outer end or.

the yarn is actually helped in-the last part of its traverse toward the plane in which the guide eye lies. By suitably shaping the breastplate it is possible to cause the yarn to be wound in the return traverse in evenly spaced spirals corresponding precisely with the outgoing spirals under the control of the grooves in the roller. Alternatively, the breastplate may control the-return winding so as to give any required distribution oi the yarn, causing the return traverse for instance .to be-eii'ected in one more turn 01' the" roller than the outgoing traverse or vice versa.

In all cases where two oppositely directed helices are used on the roller, the yarn is first caused to traverse by one helical groove to one end 01' the roller, is then brought back by the puli from the guide :eye under the control of the breastplatc to the plane in which the starting end 01 the other helical groove lies. and is accurately deposited alter the requirednumberoi ends of the roller in short backwardly directed lengths in order to start the return travel oi the yarn accurately, but under no circumstances is there a return groove crossing the outgoing groove, the pull of the yarn from the yarn delivering device over. the surface of the breastplate being relied upon entirely to control the return traverse of the yarn over the surface of the roller. It will be convenient g tc use, the term guide eye throughout to indicate the stationary yarn i delivering device, although this is not necessarily an eye or icon but may be a small tensioning roller or any other convenient form of stationary The object of the breastplate is to regulate the return travel of the yarn so as to render the winding more even than it would be under the pull from the guide eye alone. In the most general turns in the starting end of this groove which causes it to complete the traverse to the other end of theroller. 4

. It is possible, however, to make use or the inven- -v tion' with aroller having a single helical groove in its surface andwith' the guide eye either displaced in a plane toward one end or the roller or placed in an'intermediate position, the breastplate serving to control the return traverse of the yarn. It the single groove in the roller is or substantially uniform pitch the breaittplate is curved so as'to impose a drag on the return travel of the yarn in the flrstpart of the traverse, and actually to accelerate the travel of the yarn in the last part of the traverse under the pull iron: the guide eye. In this way the yarn can be cases in which two oppositely directed helical grooves are used with a guide eye in a plane approximately in lin with the starting ends of the helical grooves the breastplate may have two curved surfaces meeting at a dip or valley in the middle. Apart from the breastplate the pull of the yarn from the guide eye tends to cause the yarn to traverse more rapidly and therefore at a wider pitch at the start or each return traverse, the pitch becoming less until there ceases to beany lateral drag on the yarn when it reaches the plane of the guide eye. Each curved surface o! the breastplate is then so shaped as to impose a drag on the traverse oi the yarn when the caused to be wound in the return traverse ins ubstantially uniformly spaced spirals which may correspond in number and pitch with those of the grooves on the'rollenor may be of greater or less pitch.

Various other alternatives are possible within the scope of the invention as will appear from the description of several alternative constructions with reference to the accompanying drawings, wherein: Y I a -Fig. 1 is a somewhat diagrammatic front view or a typical winding arrangement according to the invention. i'

Fig. 2 is a corresponding side view thereon Figure 3 is a plan view or part of the thread" guide roller and breast plate;

7 Figure 4 is a development of the surface of the grooved roller of Figures 1 to 3;

Figure 5 is a plan view similar to Figure *3,

of a modified arrangement: Figure 6 is a development of the surface of the grooved roller shown in Figure 5;

Figure '7 is a plan view, similar to Figure 3, of a further modified arrangement;

Figure 8 is a plan view of a construction adapted'for winding the yarn in a conical or tapering roll; Fig. 9 is a somewhat diagrammatic side view of an arrangement according to the invention modified to wind a cylindrical roll of yarn.

Fig. 10 is a corresponding plan view thereof. Figure 11 is a development of the surface of the grooved roller shown in Figure 10;

Figure 12 is a plan view of a further'modiflcation using a grooved roller with one helical groove only, and

Figure 13 is a development of the surface of the grooved roller shown in Figure 12; r

Figures 14 and 15 are plan views of other alternative; arrangements, Figure 14 showing the winding of a taper roll, and Figure 15 the winding oi a parallel roll, using the same form or grooved roller;

43. As it reaches the dip 43, as shown by the dotted line 42, the yarn falls into the starting and 38 of the groove 34 and is traversed out to the righthand end of the roller by the groove 34, being released at the return end 38 of the groove 34. Here again the return traverse is at first retarded by the righthand bulge of the breastplate and then accelerated as indicated by the chain-dotted line 4|, until it drops into the splayed starting end 31 of groove 35. The cycle then repeats, the curved surfaces of the breastplate 28 controlling the return traverse from each side back toward the central plane, and the curvature being such that the yarn is wound in equally pitched helices, or approximately so, in both directions.

It will be seen that in the example illustrated the guide eye 24 is in a plane corresponding approximately with that of the end 31 of groove 35, but the dip or valley 43 in the breastplate is to the leftof this and nearer to the plane through the starting end 36 of groove 34, so that the yarn is deflected as shown in dotted lines at 42. This insures its entry into the splayed end 31 of groove on its return from the righthand end, and its entry into the splayed end 36 of groove 34 on its return traverse from the lefthand end. The dis- Fig. 16 is a front view of another alternative arrangement accordingto the invention, using a roller with a single helical groove.

Fig. 17 is aside viewthereoi.

tance of the'guide eye-24 iromthe roller and the curvature of the breastplate are made. such the yarn travels from the end 38 of groove 34 back that the roller 29 makes two complete turns as Fig. 18 is a .plan'view of the arrangementsof Figs. 16-an'd 17. i I

Referring to Figures 1 to 4, th yarn is shown as being supplied from a bobbin 23 through'a guide 26 to a tension device 21 on arm 23, which also carries the guide eye 24. From this the yarn passes over the face of a breastplate 29 shaped 4 as seen in Figure 3. to reach the surfaceof. the

. grooved roller 29. The roller-29 is mounted on a shaft 39 driven. by suitable means (not shown) and the yarn after passing over'theroller 29' i wound on a roll 3i di'iven in this case by resting on the surface of the grooved roller 29. The

roll 3| is carried by asuitable arbor between arms 32 pivoted at 33 but any other suitable means of supporting the roll 3| maybe adopted.

Q there shown has two grooves 46 and 41 oi con-' to the starting end 31 of groove-35, and rather less than two turns as the yarn returns from the end 3901' groove 35 to drop into the starting end 36 of groove 34. ,The overlap of the end 36 is respon-' sible for this, as it gives groove 34.rather more than two turns round the roller 29. There are thus four turns of yarn wound on the roll in each layer, and-these turns are substantially of uniform pitch'throughout. j

. Referring now :to Figures 5 and 6, the roll 45 stant pitch; say 3 inches between turns; and their inner ends overlap but are not shown as being splayed as that is notessentlal. The breastplate 48 and guide eye 49 are similar to those of Figures- 1 to 4, 'tlie'valley 5i! of the 'breastplate lying in The roller 29 has two oppositely directed hellv cal grooves 34 and 35 in its surface of aform seen best in Figure 4'. The starting end of groove 34 is numbered 38 and it overlaps the starting end 31 of groove .35. Each groove 34, 35 extends out'to.

which the control is effected can best be seen by reference to Figure 3.

- Assuming the. yarn to have justentered the splayed end 31 of groove 35, itis carried out to the left hand end of the roller by this groove 35 and is released at the return end 38. At this stage a plane'between the starting ends of the grooves 46 and 41. If no breastplatc' were used and with the gui eye 49 in the position shown, the return travel of the yarn from the ends of grooves 46 and 41, over the surface of the roller 45,'would beas indicated by the dottedlines 5| and 52, Fi ure 6,

' the guide eye being so placed'as just tobring.

back the yarn into the starting ends of the grooves '46 and 41. The lines 53 and 54 show the paths of the return travel of the yarn when the breastplate is used. The pitch is less than the outgoing pitch in this case, namely about-.2 4; inch per turn in the return helices but that is no disadvantage as the yarn is evened out in pairs of layers so that the distribution is substantially uniform.

The starting ends of the helical grooves need. 7 not be in a central position in the roller but may be nearer to one end than the other. Y This is illustrated inQF'igurev 7 where the roller Gil-has it is being pulled over the breastplate 28 as indicated by the full line 40, and the outward curve of the breastplate serves to retard. the return traverse under the pull from the. guide eye until the line of the yarn passes over' the bulge, after which its traverse is accelerated by the inward curve or the breastplate into the dip or valley two. grooves 31 and 58, of which groove 5'! occupies only about 1 /2 turns while groove-58 occupies nearly 3 turns. The guide eye 56 is ap-:

proximately in line with the end of the flare .of groove 59, and thebreastplate 59 has its valley 6! in a plane between the two flares. The bulge in l the lefthand portion of the breastplate is larger than that to the right, as is necessary to impose more drag on'the return travel of the yarn from seem the lefthand end where it would otherwise extend at a steep angle to the guide eye 50. The pitch a roll 62 is shown as being supported on a tapering arbor 68 carried by an arm 81, and it is rotated by contact with the roller 63 as usual. The guide eye 08 is approximately in line with the splayed end of groove 64, and the valley 10 of the breastplate 89 is inthe same plane as the guide eye in site the starting and of this groove, while the;

breastplate 83 has a single bulge with a valley 84 to the left of the plane through the guide eye. In the example shown the groove 85 is of two inch pitch, and the shape of the breastplate is such as to cause the yarn to return in coils also of two inch pitch, as indicated'by the lines85 in Figure -13. Apart from the breastthis case. In the return travel 01 the yarn from the lefthand end or the groove 65, the lefthand bulge of, the breastplate 69 serves to spread the turns so'that they follow a diminishing pitch more or less corresponding to the increasing pitch about the same rate of diminution of pitch. In

the return traverse the righthand bulge of the 1.0 plate the yarn would return to the startingend .in two turns of varying pitch along a line such as is indicated by the dotted. track 86 in Figure 13. This would give aroll of unequal density .tending to be hard toward the leithand end, and this is completely avoided by the use of the breastplate 83.

Figure 14 shoWs a similar construction to Figare 12 but adapted for winding a taper roll instead of a parallel one; The roller 81 has agroove of varying pitch designed for winding a taper roll say six inches long, the varying pitchgiving a I traverse of about one and a half inches for the of the groove 55 from right to left, and the groove I 04 when it takes charge of the yarn continues its traverse to the rlghthand end of the roll62 at breastplate 89 causes the-yarn to be wound in a I 1% pitch like that or the groove 64 until itialls into the starting end of the groove 65 on reaching the valley 10. I

' Figures 9 to 11 illustrate a construction destarting ends of the grooves ll, 12 on the roller II are in line, while the valley 18 oi the breastplate 14, and the guide eye 15 are all approximately on the same plane at right angles to the roller 13.

In an actual example 01' this construction which has been tried, the distance a of the guide eye 15 in front or the vertical plane through the centre oi the roller 13 was seven inches; and the vertical distance b below the centre of the roller was live and three-eighths inches. The breastplate 14 was three-quarters of an inch above the horisigned for winding cylindrical rolls, in which the vflrst turn, two inches for the second turn and two and a half inches for the third turn. The

1jbreastplate'88 is so shapedin :onjunction'with the position of the guide eye89 that the yarn is returned over the surface'of the roller from :thefouter end of the groove therein in turns iofxdiminishing pitch reproducing the outgoing turns substantially. The result is to givea taper roll of uniform density throughout its length, while taking accountof the increasing amount of yarn to be laid upon-it at the larger end.

Figure 15 shows the same roller 81 used in this case to wind a parallel roll of yarn. All that is necessary for this purpose is to change the breastplate; the new breastplate 90 having a bulge toward the righthand side and a valley 9] toward the left. The eifect of the breastplate is ,to cause the yarn to wind from the righthand end with a small-pitch first and an increasing pitch as it nears the lefthand end so as to counterbalance the increasing pitch'of' the yarn in the outward i traverse efiected by the groove in the roller 81.

zontal plane through the centre of the; roller 13, g

and its bulges, as indicated by the length cm Figure 9, were three inches in front of the centre of the roller. The length of the roller 13 was such as to give a nine inch traverse, so winding a roll 1'! nine inches long. The grooves H and 12 in .the roller 13 have an outgoing pitch or two and a quarter inches,'while the pull from the guide eye I! over the bulges of the breastplate 14 caused the return traverse of the yarn over the surface of the roller to be at a pitch or one and thirteen sixteenths or an inch. The return traverses are indicated by the lines 18 and 19 in Figure 11. The dropping 01 the yarn into the valley 16 underv the pull from the guide eye is sufilcient to ensure entry of the yarn into the starting ends or the grooves II and 12 respectively; These starting ends are at opposite sides or the roller 13, and or course the yarn drops into the one which first presents itself, this being ineach case the one which will carry the yarn out to the opposite endot the roller.

. When winding rolls of short lengths such as six inches, it is possible to use a helically grooved roller with a single helix upon it, and with the guide eye displaced toward one end of the grooved roller. Such a construction is shown in Figures 12 and 13, where the roller has a single helical v groove 0| and the guide eye is in a plane oppo- 'Figures 16; .17, and 18 show an arrangement I in which the grooved roller I0l' has a single helical groove I02 and a guide eye I03, to which the yarn passes from the tensioning device I04 which is in an approximately central position.

Without a breastplate of course the yarn would never be displaced toward the starting end I05 of the groove I02.' Witha. breastplate I06 of the form seen in Figure 18 the return traverse, q of the lyarn is' controlledjand it is caused to 1 travel out toward the 'lefthand end around the curve of the breastplate until it enters the starting end I05 of the single groove. The line I01 drawn 'on'the' surface of "the roller in Figure 16 indicates the approximate return path of the fya'rn over the surface of the roller under the control of the breastplate I08, the pitch being the same as that of the groove I02. A roll I08, ten inches in'length, can be wound in this way. In

a practical example in accordance with Figures 16,- '17, and 18, the contract the guide eye I03 was at a distance d, Figure 1'7, amounting to four and seven eighths inches in front of the plane through the centre of the roller MI, and the guide eye was at a distance e, six and three quarters inches below the centre of this roller. The breastplate was slightly above the centre or the roller I 0| as seen in Figures 16 and 17.

The examples described will suillciently indicate the way in which the invention can be applied using rollers either with a single helical groove or with two oppositely directed helical grooves without any crossing point between them, and withaguide eye in various possible positions,

while the return traverse of theyarn from the far end of a grcbve. back either to the starting end of the same groove 'or to the starting end of an oppositely directed helical groove is effec tively controlledib y the pull of the yarn from the guide eye passing over the surface of 'a 'breastplate. Many other arrangements are possible besides those described and illustrated, but

these can be developed on theprinciples already described to comply with any usual'requirements in the winding of either parallel or tapering rolls of yarn. It is the curved guiding surface of the breastplate which is of importance, and it is not necessarily made as a plate but may be a bar 7 as in Figure 8, and maybe supported in any convenient manner. Both'the guide eye and the breastplate may be adjustably mounted so as to enable them to be set accurately to the best position for operation in each case;

Although the roll of yarn has been shown throughout as being driven by contact with the surface 01' the grooved roller, any other 'usual' methods of driving a spindle carrying the roll and said roller, said breastplatehaving two outwardly bulged surfaces with a valley between. them, means-for rotating said roller, and an arto be wound may be adopted. The advantageof a driving it by contact with the roller is that the surface speed is maintained ubstantially uniform as the roll increases in diameter. In the case'of'v a tapering roll the speed at which it tends to turn is intermediate between that at which the narrower end and the larger end would be driven,'{ 1 some slip occurring at both ends to enable the intermediate speed to'be attained. j I "Iclaim: 1 a l. Ina winding device for cross-windingrolls' of yarn, the combination 01a guide member for the yarn, a roller with a helical groove in its surface free from crossing points-with other grooves,

means for rotating said roller, an arbor for supporting the roll of yarn as it is wound; and a. breastplate between said guide member and said helically grooved roller, said breastplate having an outwardly bulged curved surface over which the yarn is stretched in itspassage to the said helically grooved roller, the pull of the yarnfrom 1 said guide member under the control of they a curved. surface of the-breastplate being adapted l to control the return traverse of the yarn over i the surface of thehelically groovedroller, after it leaves the groove therein adjacent an end of first part of its return while the stretch .of the yarn over said breast plate is increasing, and to accelerate the traverse of the yarn in the last part of its return in which thestretch of the yarn over said breast plate is becomingless.

2. In a winding device for cross-winding rolls 1 of yarn, the combination of a guide member for the yarn, a roller with a helical groove in its sur-- face free from crossing points with other grooves, means forrotating said roller, an arbor for supporting the-roll of yarn as it is wound, and'a breastplate situated between said guide member 66 817,937

and-said hellcally grooved roller, said breastplate having an outwardlyrbulging curved surface over which the yarn is stretched in its passagetosaid hellcally grooved'roller, "a part of said curved surface being inclined to the axis of the helically grooved roller in a direction suchras to i'mpose a- V drag on the traverse of the yarn thereovenand 1 another part being inclined to said axisin a direction such as to accelerate the traverse of the yarn under the pull from said guide member to the surface of said helically groovedroller, whereby. the return traverseof the yarnwhen it, is'free J from the control of the groove in said roller isrendered more uniform.

3. 'A windingrdefvice for cross-winding rollsof I;

yarn, comprising a stationary guide member ior the yarn, a roller with two helical grooves in its a surface whichare oppositely directed from an in:

termediate position toward'opposite ends of said roller, and which are free fromintersections, a

breastplate situated between said guide-member bor adapted for supporting a roll of yarn to be wound, the outwardly bulged-surfaces of said breastplate being adaptedto control the retumtraverse of the yarn from the ends'of said roller toward the intermediate position and into-the starting ends of the oppositely directed grooves therein;

4. A winding device;torcross-winding rollsof yarn. comprising a stationary guide member for j, the yarn. a roller with two helical grooves in its 7 surface extending in opposite directions from an intermediate zone toward the ends of theroller and free from intersections therein, a breastplate situated between said guide member and said roller, said 'bre'astplate' having two outwardly curved surfaces meeting in a valley in an inter- T mediate position, over which curved surfaces the said roller. said-surface or the breast plate being shaped to retard the traverse of the yarn in the Number file of this patent: w

roller.

, L nar ananons The'i'ollowing references are-oi record inthe tmrran s'rA-rns ra'ran'rs Name Date i 2,156,472 Dersen May 2, 1939 ,r'onnr'onra'rnn'rsz Number Country Date French June 7, 1937 oH rRmdLEf moms: 1 

